Locking device for spinning-bucket covers



May 27, 1930.

I C. E. COLEMAN LOCKING DEVICE FOR SPINNING BUCKET COVERS Filed Sept.24, 1926 ATTORNEY Patented May 27, 1930 UNITED STATES PATENT OFFICECLARENCE E. COLEMAN, OF BUFFALO; NEW Y ORK, ASSIGNOR, BY MESNEASSIGNMENTS,

TO DU POINT BAYON COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARELocxme nEvIcE son srmnme-nucxnr covnns' Application filed September 24,1826. Serlallio. 137,517.

This invention relates to a device for locking the cover upon a rotatingreceptacle and more particularly upon a bucket used for spinning rayon.Such buckets are mounted upon revolving spindles from which they aredriven by suitable friction devices. The

.rayon coming from the spinning nozzle is formed on the interior of thebucket in the form of a cake, the necessary twist being imparted by therotation of the bucket. The rayon passes to the interior of'the bucketthrough an aperture in a cover secured on the bucket. In the pastdifficulty has been experienced in securing the cover so that it willnot slip in a direction opposite to the direction of rotation. It hasbeen customary to secure the cover to the bucket by means of a springwire clip, but any metal which is suitable for forming such a clip andwhich would retain its spring action is subject to corrosion fromcontact with the various acids and solutions to which it would besubjected.

Therefore, it is the object of my invention to provide a device whichwill securely lock the cover to the bucket and which may be actuatedeither manually or automatically; and which furthermore is in such formthat it can be readily manufactured of acid-re sisting material such asaluminum or molded bakelite.

In the accompanying drawing, in which I have shown selected embodimentsof my invention:

Figure 1 is a vertical section through a bucket showing a cover lockedin place according to my invention.

Figure 2 is a fragmentary plan view on 1 an enlarged scale of a portionof the device the line 3-3 of Referring now to the drawing, the numeral1 designates a spinning bucket of any suitable form and which isprovided with an annular shoulder 2'upon which is received the cover 3,this cover having the central aperpassed into the bucket. What I newconsider my preferred embodiment is shown in Figures 1, 2 and 3, and,referring thereto, it will be seen that I have provided a pair oflocklng devices 5 in the form of plates pivoted eccentrically to thecover at 6. The pivot may be formed in any suitablemanuer, but I preferto have it in the form of a boss 7 integral with the cover andinteriorly threaded to receive a screw 8, the head of which extendsbeyond the boss to retain the plate 5 thereon. The plate may be madecircular in form and provided with a wedgeshaped edge 9 adapted to bereceived within a recess 10 in the bucket, this recess being shownherein in the form of an annular groove. A suitable finger piece 11 maybe provided for manual operation of the plate.

In operation, the plate may be moved to the locking position shown inFigure 2 by hand or, if not, then the movement will occur automaticallywhen the bucket is rotated. Centrifugal force will cause the plate torotate upon its pivot until the edge 9 is firmly wedged into thecorrespondingly shaped recess in the bucket. It will be noted that thepivots 6 are so disposed that the plates 5 cannot rotate through 360when the cover is in position. Therefore, the plate will always tend tomove outwardly further and consequently thegreater the speed ofrotation, the more firmly will the device lock the cover to the bucket.

Referring now to Figures 4 and 5, I have shown therein a differentembodiment, in which the pivot is in the form of a screw 12 having abearing 13 thereon and threaded into the cover 3. The plate 14 ispivoted on the bearing 13 and retained thereon by the head of the screw12. It will be noted that the plate in this embodiment may rotatethrough 360, its edge and the groove 15 in the bucket being so formed asto permit this rotation. p

ture 4 therem whereby the rayon may be In Figures 6 and 7 I have shownstill another embodiment in which the boss 7 and screw 8 are employed,these corresponding to the boss 7 and screw 8 of Figures 1, 2 and Thelocking plate 16 is pivoted on the boss 7 as a bearing and is providedwith the wedge-shaped edge 9' co-acting with a corres ondingly shapedgroove 10 in the bucket. A nger piece 17 may be provided for manualoperation. In this form the locking plate may rotate through 360 but theplate and groove are provided with the co-acting wedge-shaped members toaid m tightly holding the cover in place on the bucket.

It will be seen that all of the parts of my invention, including thepivot and the looking plate are of such form that they may be made ofacid-resisting metal or material. I avoid entirely the use of springs orother parts which have to be made of a maternal which will corrode underthe action of the acids to which my device is exposed.

The cover will be locked in place either by hand or automatically. If,through carelessness of an operator, the locking device is not actuated,nevertheless, before an excessive speed of rotation is reached thedevice will operate automatically and securely lock the cover inposition. In the preferred form of Figures 1, 2 and 3 the locking forcew1ll 1ncrease as the speed of rotation increases, thus supplying lockingforce as it it needed.

While I have shown selected embodiments of my invention I am aware thatthose skilled in the art may make changes therein without departing fromthe scope of my invention and I do not intend to limit myself except bythe appended claims.

' I claim:

1. In combination, a spinning bucket havin a cover thereon and a recesstherein, a lo king plate eccentrically pivoted on sald cover adapted tobe received in said recess and locked therein by the centrifugal forceof the rotating bucket.

2. In combination, a spinning bucket having a cover thereon and a recesstherein, a locking plate eccentrically pivoted on said cover adapted tobe received in said recess and locked therein by the centrifugal forceof the rotating bucket, said plate being so disposed in respect to thebucket that the bucket prevents the plate from making a completerevolution on its pivot.

3. In combination, a spinning bucket having a cover thereon and a recesstherein, a locking plate eccentrically pivoted on said cover adapted tobe received in said recess and locked therein by the centrifugal forceof the rotating bucket, said late having a wedge-shaped edge and saidrecess being shaped to co-act with said edge.

4. In combination, a spinning bucket having a cover thereon and a recesstherein, a plurality of locking plates eccentrically pivoted on saidcover adapted to be received in said recess and locked therein by thecentrifugal force of the rotating bucket, each of said plates having awedge-shaped edge and said recess being shaped to co-act with said edge,each of said plates being so disposed in respect to the bucket that thebucket prevents the plate from making a complete revolution on itspivot.

5. In combination, a spinning bucket having a cover thereon and a recesstherein, a plurality of locking means, each of said locking meanscomprising a boss integral with said cover, a locking plateeccentrically mounted upon said boss, a screw threaded in said boss andretaining said plate thereon, a finger piece on said plate for manualoperation thereof, and a wedge-shaped edge on said plate adapted to bereceived in said recess.

6. In combination, a spinning bucket having a cover thereon and a recesstherein, a plurality of locking means, each of said looking meanscomprising a boss integral with said cover, a locking plateeccentrically pivoted upon said boss, a screw threaded in said boss andretaining said plate thereon, a. finger piece on said plate for manualoperation thereof, and a wedge-shaped edge on said plate adapted to bereceived in said recess,said plate being so disposed in respect to thebucket that the bucket prevents the plate from making a completerevolution on its pivot. 7. In combination, a spinning bucket having acover thereon and a recess therein, a plurality of locking plateseccentrically pivoted on said cover adapted to be received in saidrecess and locked therein by the centrifugal force of the rotatingbucket.

8. In combination, a s inning bucket having a cover thereon and a recesstherein, a locking plate eccentrically pivoted on said cover adapted tobe received in said recess and locked therein by the centrifugal forceof the rotating bucket, and means on said plate whereby the plate may bemanually moved.

9. In combination, a spinning bucket havmg a cover thereon and a recesstherein, and a plurality of locking plates eccentrically pivoted on saidcover adapted to be received in sa1d recess and locked therein by thecentrifugal force of the rotating bucket, said plates being so disposedin respect to the bucket that the bucket prevents the plates from makingcomplete revolutions on their pivots.

10. In combination, a spinning bucket having a cover thereon and arecess therein, and

a plurality of locking plates eccentrically pivoted on said coveradapted to be received in said recess and locked therein by thecentrifugal force of the rotatin bucket, said plates haying wedge-shapede ges and said recess being shaped to co-act with said edges.

11. In combination, a spinning bucket having a cover thereon and arecess therein, a

locking plate eccentrically pivoted on said cover adapted to be receivedin said recess and locked therein by the centrifugal force of therotating bucket, said plate being so disposed in respect to the bucketthat the bucket prevents the plate from making a complete revolution onits pivot, and finger means on said plate.

12. In combination, a spinning bucket having a cover thereon and arecess therein, a

plurality of locking plates eccentrically pivoted on said cover adaptedto be received in said recess and locked therein by the centrifugalforce of the rotating bucket, said plates being so disposed in respectto the bucket that the bucket prevents the plates from making completerevolutions on their pivots, and linger means on said plates.

in testimony whereof, I have aflixed my signature to this specification.

.TLARENCE E. COLEMAN.

